Gather the ingredients for your zucchini bread.
Preheat the oven to 350°F and lightly grease two loaf pans with baking spray.
In a large bowl, whisk together the eggs, vegetable oil, granulated sugar, and vanilla extract. Set aside.
In another bowl, combine the flour, baking powder, baking soda, salt, and cinnamon. Then, add the dry ingredients to the wet ingredients.
Stir until just combined, then fold in the grated zucchini and chopped walnuts.
Divide the batter into the prepared loaf pans. Bake for 1 hour, or until the tops are golden brown and a toothpick inserted into the center comes out clean.
Let the zucchini loaves cool in the pans for 10 minutes. Remove them from the pans and transfer to a wire rack to cool completely before slicing. Enjoy!